Planorbis 
Physa 
| 
Amphipeplea 
y 
Limnaea 
| 
Ancylus 
| 
| 
Viviparus 
Bythinia 
| 
Valvata 
Paludinella 
| 
Lithoglyphus 
Neritina 
Cyclas 
Pisidium 
| 
Dreissena 
Unio B 
s | 
Margaritana iw 
| 
Für den Buchhinder! 
Carton zu: Nova 
Acta XLV. Nr. 4. 
Sign. : 
Anodonta | 
| 1 
7 7 i 
o RS Poe T 
2 2| 8 | 
A | ZS = 
ae | | E 
bo e | 9 = [2] 
o | | ie ci e 2 o 
RSC E || o ome eem s 
Sue re GO oa iid GES EE 
Ur $ EN ap | > 
ON ae EC A ER | 
ey Gg E | 
dk 
239 
